mirror of
https://github.com/morluto/rea.git
synced 2026-10-26 17:35:11 +00:00
N0zoM1z0
5a7c769692
* feat(firmware): integrate Binwalk and Unblob analysis * fix(firmware): verify published files and namespace source references * test(firmware): isolate extractor dependency failure from process cleanup * fix(firmware): retain actionable report and cleanup diagnostics * test: assert retained batch output failure diagnostics
44 lines
1.8 KiB
Python
44 lines
1.8 KiB
Python
"""Generate firmware bytes using standard format producers, with an independent oracle."""
|
|
import gzip
|
|
import hashlib
|
|
import io
|
|
import json
|
|
from pathlib import Path
|
|
import subprocess
|
|
import sys
|
|
import tarfile
|
|
|
|
root = Path(sys.argv[1]).resolve()
|
|
root.mkdir(parents=True, exist_ok=True)
|
|
source = root / "probe.c"
|
|
source.write_text("int firmware_probe(int x){return x*7+3;} int main(void){return firmware_probe(4);}\n")
|
|
subprocess.run([sys.argv[2], "-O0", "-g", "-fno-inline", str(source), "-o", str(root / "probe")], check=True)
|
|
payloads = {"etc/rea.conf": b"rea_fixture=true\n", "usr/bin/probe": (root / "probe").read_bytes()}
|
|
buffer = io.BytesIO()
|
|
with tarfile.open(fileobj=buffer, mode="w", format=tarfile.USTAR_FORMAT) as archive:
|
|
for name, data in payloads.items():
|
|
info = tarfile.TarInfo(name)
|
|
info.size = len(data)
|
|
info.mode = 0o644
|
|
info.mtime = 0
|
|
archive.addfile(info, io.BytesIO(data))
|
|
compressed = gzip.compress(buffer.getvalue(), mtime=0)
|
|
image = b"REA firmware fixture\n".ljust(64, b"\xff") + compressed + b"\x00" * 128
|
|
(root / "firmware.bin").write_bytes(image)
|
|
(root / "oracle.json").write_text(json.dumps({
|
|
"generator": "Python tarfile USTAR + gzip; host cc; no target execution",
|
|
"offset": 64, "length": len(compressed), "size": len(image),
|
|
"sha256": hashlib.sha256(image).hexdigest(),
|
|
"files": {name: {"sha256": hashlib.sha256(data).hexdigest(), "size": len(data)} for name, data in payloads.items()},
|
|
}, indent=2) + "\n")
|
|
print(root)
|
|
|
|
if len(sys.argv) > 3:
|
|
tree = root / "ext4-root"
|
|
tree.mkdir(exist_ok=True)
|
|
for name, data in payloads.items():
|
|
target = tree / name
|
|
target.parent.mkdir(parents=True, exist_ok=True)
|
|
target.write_bytes(data)
|
|
subprocess.run([sys.argv[3], "-q", "-t", "ext4", "-F", "-d", str(tree), str(root / "ext4.bin"), "8192"], check=True)
|